Improved sugar-juice evaporator



THOMPSON O ROGERS.

Evaprating Pan. No. 36,179. Patented Aug. 12, 1862.

UN TED STATES PATENT OFFICE.

IMPROVED SUGAR- JUICE EVAPORATOR.

Specification forming part of Letters Patent No. 36,l79, dated August 12, IBffZ.

evaporate the juice of sorghum; `but it may bev used with equal effi cieney in evaporatin g other saccharine juices.

In the drawings annexed, Figure 1 represents a longitudinal section of the furnace,l lwith apparatus arranged in position. Fig. 2

is a plan view of skimmer and bail attached. Fig. 3 is an end view of bail and skimmer.

The body ofthe furnace is oblong, having a door at each end.

The letter A in Fig. l represents the filter through which the juice must pass before entering the heater B. The filter rests on a platform designed to be ona level with the upper edge of B, and fastened at the lower end to the side of the furnace A is rendered adjustable by turning on its axis, which passes through the center ofthe platform. A spoilt extends from the lower partof the filter to conduct the juice from it into the heater B.

C is a revolving skimmer forming the lony gitudinal section of a cylinder, with an iron rod passing through it lengthwise with a crank at the end, with which it is operated. The heater B has a notch cut at each end, into which the rod e rests, so that when the skimming process is to be performed by C (occupying an inverted positionthat is, with the concave side down) all required is to give it' a semi-revolution by means of the crank, and by this simple process remove the scumthoroughly from the surface of the saccharine juice in B. .The moment the skimmer C has performed its office it may be removed from B by the means of the bail c, which may be connected by rope and pulley to the arm of a crane situated convenient to the furnace. At the end of B are two spouts or conduits for drawing off the juice into the Sirup-pans D D, these also having conduits to draw off the sirup when sufficiently evaporated.

Between the two Sirup-pans D D is a partition running in a line with the chimneys, making the pans of equal size. Then the juice in one is sufficiently evaparated ,the bottom of the other can be brought immediately over the furnace by sliding D D on the brackets b b, which are attached to the side of' the furnace, s0 that the sirup in one compartment will be cooling while the other is boiling.

The furnace is supplied with two smokepipes or chimneys, E E, one situated at the end and the other midway of. the furnace. Each of the chimneys has a damper, d, which in combination with the damper F at the center of the furnace, constitutes what is equivalent to a double furnace, whereby the heat can be retained under the heater B, shifted to the other end of furnace under the Sirup-pan, or suffered to pass through the whole length plieations of heat are effected, first, by regulating the damper at the center of furnace iu order to send the heat, from either end, to the center chimney secondly, by closing the damper of center pipe and opening the one at the end the heat is sent the whole length of the furnace.

Having thus accurately described our invention, what we claim, and desire to secure by Letters Patent, is-

1. rlhe revolving skimmer B or its equivalent, in combination with the bail O, to be operated in the manner and for `the purpose herein set forth and described.

2. rIhe two chimneys with accompanying dampers, in combination with damper in the furnace, as herein specified.

A. H. ROGERS. G. XV. THOMPSON.

Witnesses:

A. B. DUMONT, A. J. MOKEAN.

ofthe furnace at pleasure. These several ap- 

